Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – BlitzWolf BW-WA2 20W Bluetooth Speaker (-3 USD)
2. Europe – BlitzWolf BW-WA2 20W Bluetooth Speaker [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (19.99 USD): BGa36fc7
Coupon (19.99 USD): BG763516
Coupon (25.99 USD): BGe775c4
Coupon (29.99 USD): BGa59b69
Coupon (38.63 USD): BGAudio9
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG15WA2, BGss506, AFfbG10, BGBWWA2, BGWA2001, BGwa2p5, BG15WA2Q, BG3xwa2, 502C6B, BGWA2BT, BGNAWA2, BGWA2BF, BGWA288, BGBWWA222, BG20CES, BGVDay10%off, BGGR409, EARSP11, BGWA2UKK, BGCCWA2, BGAFF10OFF, bGhOnEy10, BGBW152, BGRWA2, 7d18f7, BGSS10%SW, BGWA2777, bgshOOp10, BG11SHOP, 10%ForNewBW, BG4BW25, BGLOAC1, BGWA2ESA, BGissam02, 10%ForBGBW, BGLOAWA2, BG24a812, BGed79d8, 13f142, BG7WA2, BG43450c, BGc3a8a5, BGBuscape01, BGWA2BW, BGBRPL2, BGHOTSHOP15, BG8e496f, BG53e9c8, BGAlerabatKL, BG023bfd, BG41ac1c, BG2f9724, BGAUDIO, BGf5a425, BGWA2Z, BG9ba0e8, BG9aa50e, BG1b5830, BGSaleFeb8, BGAudio3, BG35ba1f
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – BlitzWolf BW-WA2 20W Bluetooth Speaker (-3 USD)
2. Europe – BlitzWolf BW-WA2 20W Bluetooth Speaker [EU] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for BlitzWolf BW-WA2 Lite 12W Bluetooth Speaker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).